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This study aims the improvement of antibacterial and biocompatibility properties of electrospray ternary blends of chitosan/poly(ethylene glycol)/hyaluronic acid. It conserves microscale particle structure even after incorporating zinc oxide (ZnO), the zeolite Mobil Composition of Matter No. 41 (MCM41) and penicillin G during this technique. Three different electrospray (ESP) blend compositions (ESPI, ESPII and ESPIII) have been produced in order to improve both antibacterial activity against to both gram-positive and gram-negative bacteria and biocompatibility. Results of FTIR spectroscopy and microscopy verified with SEM, EDS and AFM analyses. Hyaluronic acid surface has been specified definitely through ZnO-based ESPI surface composed of heterogeneously dispersed microparticles. Surface structures of ESPII and ESPIII have more homogenously dispersed microparticles as hill–valley surface by the aid of MCM 41-PEN. Antibacterial activity has been performed by Kirby–Bauer method. ESPI has good antibacterial activity against both gram-positive (S. aureus and S. epidermidis) and gram-negative bacteria (E. cloacea). Each electrospray film displayed good biocompatibility against to mouse fibroblast cell line L929 (ATTC number CCL-1). The highest amount of cell proliferation has been detected on ESPIII surface. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature. 2018.03.03.1295, BAP-18, 2018-19 Authors thank to BAİBÜ-BAP Project division for financial supports (Project No: 2018.03.03.1295). Besides, Esra Cansever Mutlu thanks to BEYKENT UNIVERSITY BAP Project (Project No: 2018-19.BAP-18) for financial support. Also, this study was possible due to the benefit of the infrastructure of the National Centre for Micro and Nanomaterials as well as the National Centre for Food Security belonging to University Politehnica of Bucharest, Romania.

Mesoporous cubic MCM-48 was synthesized at a lower concentration of the surfactant. XRD, N 2 adsorption and electron microscopic studies confirmed the formation of cubic phase. Spectroscopic and electron spin resonance techniques confirmed the presence of heteroatom within the framework. The catalytic activities of various acid catalysts have been examined for vapour phase alkylation of naphthalene with alcohols and these studies revealed that aluminium substituted cubic MCM-48 was more active compared to Fe-MCM-48, Al-MCM-41 and H-Y zeolite. ? 2004 Elsevier B.V. All rights reserved.

We demonstrate morphology and pore size dependence of silica nanoparticles (SNPs) synthesized via control of the iron oxidation state. In the absence of any Fe species, only spherical SNPs are produced, whereas in the presence of Fe3+ and Fe2+ ions, SNPs with rod-like and nanosheet morphologies, 10 respectively, are formed. The average pore size increase from 1.7 nm in the absence of iron to 3.2 and 5.9 nm as Fe3+ and Fe2+, respectively, were used during the synthesis. Both samples of SNPs synthesized in the presence of Fe2+ and Fe3+ have 0.2 wt.% of tetrahedral iron in the silica framework, whereas most of the iron is in the silica extraframework, as verified by Mössbauer spectroscopy, UV-vis diffuse reflectance, FTIR, XRD data and TPR analysis. These Fe2+ and Fe3+ cations play a fundamental role to 15 control these properties because they change the curvature and the surface charge density of CTAB micelles, thus favoring the spherical to rod-like transition. The rod-like shape was retained in Fe3+- containing sample, whereas a nanosheet-like morphology was produced in Fe2+-containing sample due to the breakage of silica walls during the thermal treatment to remove the template. The control of the textural properties is interesting to allow the fabrication of selective photocatalysts for oxidation of 20 different organic substrates. Fil: Coelho, Jakelyne Viana. Universidade Federal Do Minas Gerais; Brasil Fil: Guedes, Marina Silva. Universidade Federal Do Minas Gerais; Brasil Fil: Barrera Diaz, Deicy Amparo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Física Aplicada; Argentina Fil: Sapag, Manuel Karim. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Física Aplicada; Argentina Fil: Pereira, Márcio César. Universidade Federal dos Vales do Jequitinhonha e Mucuri. Instituto de Ciência, Engenharia e Tecnologia ; Brasil Fil: de Oliveira, Luiz Carlos Alves. Universidade Federal Do Minas Gerais; Brasil

A hybrid nanoscopic capped mesoporous material, that is selectively opened in the presence of nerve agent simulants, has been prepared and used as a probe for the chromo-fluorogenic detection of these chemicals. © 2011 The Royal Society of Chemistry., Financial support from the Spanish Government (project MAT2009-14564-C04-01 and -02) and Generalitat Valenciana (project PROMETEO/2009/016) is gratefully acknowledged. I. C. thanks the UPV for her Fellowship. SCSIE (Universidad de Valencia) is gratefully acknowledged for all the equipment employed.